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86 results for “COI gene”
Figure 1 from: Basibuyuk H, Budak M, Korkmaz E (2011) A molecular phylogeny of the Cephinae (Hymenoptera, Cephidae) based on mtDNA COI gene: a test of traditional classification. ZooKeys 130: 363-378. https://doi.org/10.3897/zookeys.130.1466
Figure 1 - Percentage of nucleotide composition at each codon position.
FIGURE 19. Mapped COI gene tree. COI barcode tree from Fig. 18 visualized against a in Thirteen new species of Chilecicada Sanborn, 2014 (Hemiptera: Auchenorrhyncha: Cicadidae: Tibicininae) expand the highly endemic cicada fauna of Chile
FIGURE 19. Mapped COI gene tree. COI barcode tree from Fig. 18 visualized against a map of specimen localities using web application TreeToM (See methods). Colors represent described species.
Fig. 3 in Range of a Palearctic uraniid moth Eversmannia exornata (Lepidoptera: Uraniidae: Epipleminae) was split in the Holocene, as evaluated using histone H1 and COI genes with reference to the Beringian disjunction in the genus Oreta (Lepidoptera: Drepanidae)
Fig. 3 Polymorphism for presence/absence of restriction site for the BstSFI endonuclease in the COI gene fragment in E. exornata
Fig. 2 in Range of a Palearctic uraniid moth Eversmannia exornata (Lepidoptera: Uraniidae: Epipleminae) was split in the Holocene, as evaluated using histone H1 and COI genes with reference to the Beringian disjunction in the genus Oreta (Lepidoptera: Drepanidae)
Fig. 2 Positions of primers in a fragment of the histone repeat in Lepidoptera: H4, H1 and H2a—the genes of histones H4, H1 and H2a, respectively; NTD, CTD—the histone H1 gene regions coding for the N-terminal, globular and C-terminal domains, respectively
Figure 1 in Molecular identification of eriophyoid mites in Thrace using the 28S and COI genes
Figure 1. Map of the study area showing the sampling fields.
Re-evaluating the genetic variation of the COI gene of Insecta: Implications for DNA barcoding, metabarcoding and species delimitation studies
<p>To analyze the genetic variation of the <i>cytochrome c oxidase subunit I</i> (<i>COI</i>) gene of Insecta, the <i>COI</i> data of Insecta was downloaded from GenBank and the intraspecific Kimura-2 -parameter (K2P) distance of 40,782 species was calculated (each species with three or more sequences). Our result indicated that the maximum intraspecific genetic distance of 8,928 (21.89%) species was over 3%. Using a threshold of 3% in the clustering analysis, 7,123 (17.47%) species can be divided into two or more clusters. We also analyzed 3,189 genera with over three species (25,283 species) and found that the optimal thresholds for these genera ranged from 0.1%-15.7% (average value: 0.03531, median value: 0.02900). In clustering analysis, if the threshold values were set to 0.01, 0.02, 0.022, and 0.03, the numbers of clusters were 39,860, 31,024, 29,954, and 26,527, respectively. In metabarcoding studies, a threshold of 0.03 was recommended to estimate the species diversity of insects in a certain environment. However, using the empirical thresholds mentioned above for operational taxonomic unit (OTU) picking, the average match ratios of the 3,189 genera were 0.5137, 0.6338, 0.6440, and 0.6587. By contrast, if the possible thresholds from the distance matrix, the minimum interspecific genetic distance of congeneric species, and the optimal thresholds were used in clustering analysis, the average match ratios of them were 0.6626 0.7530, and 0.7549. Herein, we recommended the utilizations of the minimum interspecific genetic distance (when it was greater than or equal to 2%) and the optimal thresholds for OTU picking in DNA barcoding and species delimitation studies based on the <i>COI</i> gene of insects.</p>
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